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Document IIF

Analyse du comportement du gaz refoulé d'un système mobile d'entreposage d'hydrogène liquide pendant le remplissage au niveau de la station d'approvisionnement.

Analysis of the back-gas behaviour of an automotive liquid hydrogen storage system during refilling at the filling station.

Auteurs : EMANS M., MORI D., KRAINZ G.

Résumé

While refuelling liquid hydrogen storage systems using current technology, a certain amount of gas evaporates and is transferred back to the filling station. This so-called back-gas contributes significantly to a deterioration in the overall energy balance of liquid hydrogen as a fuel for automobiles. Based on data gained from dedicated measurements of a current prototype tank system, the thermodynamic state of the filled hydrogen was varied. It could be confirmed that a minimum amount of back-gas can be reached if the temperature of the transferred liquid is more than 2 K below the boiling temperature. Moreover, the data prove that the reason for the production of back-gas is not so much flashing but evaporation due to heat in-leak into the filling line. Based on these data, an optimised filling procedure for automotive liquid hydrogen storage systems shall be defined.

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Pages : 2006-3

Disponible

  • Prix public

    20 €

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    Gratuit

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Détails

  • Titre original : Analysis of the back-gas behaviour of an automotive liquid hydrogen storage system during refilling at the filling station.
  • Identifiant de la fiche : 2007-1840
  • Langues : Anglais
  • Source : Multiconference CryoPrague 2006 (9th Cryogenics 2006, ICEC 21, ICMC'06)
  • Date d'édition : 17/07/2006

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